Steel 18Х20Н13 (ЭИ997)

Designation

Name The value
Designation GOST Cyrillic 18Х20Н13
Designation GOST Latin 18X20H13
Transliteration 18H20N13
By chemical elements 18Cr20Н13
Name The value
Designation GOST Cyrillic ЭИ997
Designation GOST Latin EI997
Transliteration EhI997
By chemical elements -

Description

18Х20Н13 steel is used: for the manufacture of wire used for ropes and armor, the cable tugs operating in sea water; cables hulls of ships and marine equipment products.

Note

Low corrosion-resistant high-alloy austenitic steel.
Magnetic permeability μ ≤ 1,06 GS/E.

Standards

Name Code Standards
Castings, non-ferrous metals and alloys В84 RD 9257-76
Blanks. Of the workpiece. Slabs В31 TU 14-1-1393-75
Bars and shapes В32 TU 14-1-863-74
Wire, steel, alloy В73 TU 14-4-1091-80

Chemical composition

Standard C S P Mn Cr Si Ni Fe Mo
TU 14-1-1393-75 0.15-0.22 ≤0.03 ≤0.03 0.5-0.8 20-21.5 ≤0.7 12.5-13.5 Rest -
RD 9257-76 0.15-0.22 ≤0.03 ≤0.03 0.5-0.8 20-21.5 ≤0.7 12.5-13.5 Rest ≤0.2
Fe is the basis.
According to TU 14-1-863-74, TU 14-1-1393-75, the allowed deviations from the established standards of chemical composition and the content of residual elements must comply with GOST 5632.

Mechanical properties

Section, mm σU, MPa
Wire nagarebana
0.2-1 1570-1893

Description mechanical marks

Name Description
σU Limit short-term strength

Physical characteristics

Temperature r, kg/m3 a, 10-6 1/°C
20 7900 -
400 - 1600
800 - 1900

A description of the physical symbols

Name Description
Е The normal elasticity modulus
l Coefficient of thermal conductivity

Technological properties

Name The value
Macrostructure and pollution The macrostructure of the wire rod according to TU 14-1-863-74 should not have shrinkage porosity, bubbles, cracks and foreign inclusions.
Magnetic properties Magnetic permeability in the field 16000-40000 A/m (200 to 500 Oersted) in RD 9257-76 μ ≤ 1,06 GS/e, wire rod, on the other 14-1-863-74 μ ≤ 1,015 GS/E.